Crystal Palace skipper Mile Jedinak has suffered an injury on Asian Cup duty with Australia.

The Socceroos captain, aged 30, twisted his left ankle contesting a header during Friday's 4-1 victory over Kuwait.

Head coach Ange Postecoglou said: "He's not quite right to play and at this stage of the tournament ... we are better to give it a few days extra rest and we will re-assess where he's at for the game against (South) Korea."

Oman, which plays Australia on Tuesday in Sydney, lost their opening match of the tournament 1-0 to South Korea on Saturday. Australia and South Korea are expected to vie for top honors in Group A of the 16-team tournament.